WebNov 11, 2015 · If you went the other way and changed the rear axle ratio, the engine would scream—4000 rpm at 75 mph with a 4.11 rear gear axle ratio, adding extra wear to the engine and to your mental state. The combined gear ratios [4.11 x 2.52 = 10.35] would provide decent off-the-line performance, even with a low horsepower engine. WebWhile spinning the tire one complete rotation count how many spins the axle does. This should give you a rough idea, and then you can estimate based on common axle ratios. For instance, common axle ratios for Toyota Trucks are 4.10, 4.56, 4.88, and 5.29 so if you counted almost 5 rotations then it is likely a 5.88:1 axle ratio.
Reference Manual: Chapter 3: Axles: RPM calculation
WebAug 3, 2009 · Posts. 456. If you are using Ford brakes then the axle hang out will be 2 1/2 inches. If you are using Chevy brakes then the axle hang out will be 2 3/4 inches. Measure … WebDec 8, 2024 · Example: Using the speedometer gear calculator. Determine the size of drive gear for the speedometer given the tire size is 20 inches and the axle ratio is 3. Assume the number of teeth on driving gear as 40. … img winter park
DoctorDiff Housing/Axle Calculator
WebDec 6, 2024 · Therefore, we can calculate the Center of Gravity from the front axle to be 208 in – 28.2 in = 179.8 in. Step 3: Use the formula to calculate weight on the rear axle. The Weight on the Rear Axle is 5000 x 179.8/208 = 4322 lb. Step 4: Subtract weight on rear from total weight to find weight on front. This leaves the remaining weight of 5000 lb ... WebJan 7, 2010 · For maximum performance with less converter slip at the lockup point, your converter's stall speed should stall close to these figures. If the gear ratio and tire size you want to use isn't on the chart, use the following formula to calculate cruise rpm: MPH x Axle Ratio x 336 Tire Diameter Featured Vehicles Team Summit Sanctioning Bodies WebAxle ratio or rear end gear ratio is calculated by dividing the number of teeth on the ring gear by the number of teeth on the pinion gear. Most differentials nowadays will have a sticker … imgwlive